id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,mlocked 694,SIGSEGV after channel change with new LiveTV code (DVB).,lazyhog,Isaac Richards,"I have a problem when changing channels with DVB setup. The problem persist in all builds I've made which has new LiveTV code. When LiveTV starts it displays program OK, then whenever I change the channel, the screen goes black, I can see OSD information for couple seconds and then SEGV. After restart the channel comes up OK until the next change. Below is the frontend output. {{{ 2005-11-22 19:51:12.802 LiveTVChain::SwitchTo(3) 2005-11-22 19:51:12.802 LiveTVChain: Entry@3: '3592_20051122195112' 2005-11-22 19:51:12.817 waiting for prebuffer... 7 2005-11-22 19:51:12.901 waiting for prebuffer... 8 2005-11-22 19:51:12.985 waiting for prebuffer... 9 2005-11-22 19:51:12.987 detectInterlace(Detect Scan, Interlaced Scan, 50, 576) - >Progressive Scan 2005-11-22 19:51:12.989 Interlaced: Progressive Scan video_height: 576 fps: 50 2005-11-22 19:51:12.989 AFD: positionMap[ 0 ] == 376. 2005-11-22 19:51:13.011 AFD: positionMap[ 11 ] == 749180. [mpeg2video @ 0x6287ee4]qscale == 0 [mpeg2video @ 0x6287ee4]Warning MVs not available [mpeg2video @ 0x6287ee4]concealing 864 DC, 864 AC, 864 MV errors 2005-11-22 19:51:13.044 LiveTVChain::SwitchToNext(up) 2005-11-22 19:51:13.045 LiveTVChain::SwitchTo(3) 2005-11-22 19:51:13.045 LiveTVChain: Entry@3: '3592_20051122195112' 2005-11-22 19:51:13.132 RingBuf(/mnt/video/3592_20051122195111.mpg): OpenFile(my th://127.0.0.1:6543/3592_20051122195112.mpg, 4) 2005-11-22 19:51:13.132 Invalid file handle when opening /mnt/video/3592_2005112 2195112.mpg. 4 retries remaining. 'video_output' mean = '50816.89', std. dev. = '131367.45', fps = '19.68' 2005-11-22 19:51:13.564 NVP: prebuffering pause 2005-11-22 19:51:13.564 waiting for prebuffer... 0 2005-11-22 19:51:13.634 Invalid file handle when opening /mnt/video/3592_2005112 2195112.mpg. 3 retries remaining. 2005-11-22 19:51:13.645 waiting for prebuffer... 1 2005-11-22 19:51:13.729 waiting for prebuffer... 2 2005-11-22 19:51:13.814 waiting for prebuffer... 3 2005-11-22 19:51:13.898 waiting for prebuffer... 4 2005-11-22 19:51:13.982 waiting for prebuffer... 5 2005-11-22 19:51:14.066 waiting for prebuffer... 6 2005-11-22 19:51:14.138 Invalid file handle when opening /mnt/video/3592_2005112 2195112.mpg. 2 retries remaining. 2005-11-22 19:51:14.150 waiting for prebuffer... 7 2005-11-22 19:51:14.234 waiting for prebuffer... 8 2005-11-22 19:51:14.318 waiting for prebuffer... 9 2005-11-22 19:51:14.402 waiting for prebuffer... 10 2005-11-22 19:51:14.486 Prebuffer wait timed out 10 times. 2005-11-22 19:51:14.486 waiting for prebuffer... 0 2005-11-22 19:51:14.570 waiting for prebuffer... 1 2005-11-22 19:51:14.642 Invalid file handle when opening /mnt/video/3592_2005112 2195112.mpg. 1 retries remaining. 2005-11-22 19:51:14.654 waiting for prebuffer... 2 2005-11-22 19:51:14.738 waiting for prebuffer... 3 2005-11-22 19:51:14.822 waiting for prebuffer... 4 2005-11-22 19:51:14.906 waiting for prebuffer... 5 2005-11-22 19:51:14.990 waiting for prebuffer... 6 2005-11-22 19:51:15.074 waiting for prebuffer... 7 2005-11-22 19:51:15.146 Invalid file handle when opening /mnt/video/3592_2005112 2195112.mpg. 0 retries remaining. 2005-11-22 19:51:15.158 waiting for prebuffer... 8 2005-11-22 19:51:15.242 waiting for prebuffer... 9 2005-11-22 19:51:15.326 waiting for prebuffer... 10 2005-11-22 19:51:15.410 Prebuffer wait timed out 10 times. 2005-11-22 19:51:15.410 waiting for prebuffer... 0 2005-11-22 19:51:15.494 waiting for prebuffer... 1 2005-11-22 19:51:15.578 waiting for prebuffer... 2 2005-11-22 19:51:15.650 AFD: SeekReset(0, do flush) 2005-11-22 19:51:15.650 AFD: SeekReset() flushing 2005-11-22 19:51:15.650 VideoBuffers::DiscardFrames(): AAAAAAAAAAALAAAAAAAAAAAAA AAAAAA 2005-11-22 19:51:15.650 VideoBuffers::DiscardFrames(): AAAAAAAAAAAAAAAAAAAAAAAAA AAAAAA -- done() 2005-11-22 19:51:15.650 RingBuf(/mnt/video/3592_20051122195112.mpg) Error: File I/O problem in 'safe_read()' eno: (9) 2005-11-22 19:51:15.662 waiting for prebuffer... 3 2005-11-22 19:51:15.714 RingBuf(/mnt/video/3592_20051122195112.mpg) Error: File I/O problem in 'safe_read()' eno: \uffff0\uffff\uffff1\uffff4\uffff (9) 2005-11-22 19:51:15.746 waiting for prebuffer... 4 2005-11-22 19:51:15.778 RingBuf(/mnt/video/3592_20051122195112.mpg) Error: File I/O problem in 'safe_read()' eno: \uffff0\uffff\uffff1\uffff4\uffff (9) 2005-11-22 19:51:15.778 LiveTVChain::SwitchToNext(up) 2005-11-22 19:51:15.778 LiveTVChain::SwitchTo(3) 2005-11-22 19:51:15.778 LiveTVChain: Entry@3: '3592_20051122195112' mpegts_read_header: unable to read first 1024 bytes 2005-11-22 19:51:15.787 AFD Error: Reset(): avformat err(-1) on av_open_input_fi le call. 2005-11-22 19:51:15.788 Resyncing position map. posmapStarted = 0 livetv(1) watc hingRec(1) 2005-11-22 19:51:15.789 Position map filled from DB to: 0 2005-11-22 19:51:15.789 SyncPositionMap watchingrecording, from DB: 1 entries 2005-11-22 19:51:15.798 RingBuf(/mnt/video/3592_20051122195112.mpg) Error: File I/O problem in 'safe_read()' eno: \uffff0\uffff\uffff1\uffff4\uffff (9) 2005-11-22 19:51:15.802 Filling position map from 1 to 68 2005-11-22 19:51:15.814 Position map filled from Encoder to: 28 2005-11-22 19:51:15.814 SyncPositionMap watchingrecording total: 2 entries 2005-11-22 19:51:15.814 SyncPositionMap, new totframes: 28, new length: 0, posMa p size: 2 Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 80141232 (LWP 10551)] 0x005b8708 in av_read_frame (s=0x0, pkt=0xb660c200) at utils.c:1089 1089 const int genpts= s->flags & AVFMT_FLAG_GENPTS; (gdb) bt #0 0x00156534 in av_read_frame (s=0x0, pkt=0x8ed7010) at utils.c:1089 #1 0x00630368 in AvFormatDecoder::GetFrame () from /usr/local/dvb/lib/libmythtv-0.18.so.0 #2 0x005fcedd in NuppelVideoPlayer::GetFrame () from /usr/local/dvb/lib/libmythtv-0.18.so.0 #3 0x0060508e in NuppelVideoPlayer::StartPlaying () from /usr/local/dvb/lib/libmythtv-0.18.so.0 #4 0x0059d094 in SpawnDecode () from /usr/local/dvb/lib/libmythtv-0.18.so.0 #5 0x00b3bb80 in start_thread () from /lib/libpthread.so.0 #6 0x0192f9ce in clone () from /lib/libc.so.6 (gdb) }}}",defect,closed,minor,unknown,mythtv,head,medium,duplicate,,,0